Improvement in flasks for casting wheels



IlNiTn STATES ArtNr PriceC4 F. NISH'WITZ, OF BROOKLYN, NEV YORK.

Specification forming part of Let-ters Patent No. 19.258, dated February2, 1858.

To all whom it may concern.-

Be it known that I, FREDERICK NIsHwrrz, of the eastern district of thecityof Brooklyn, in the county of Kings and State of New York, haveinvented a new and useful Improvement in Flasks for Casting Vheels upontheir Shafts or Axles; and I do hereby declare that the following is afull, clear, and exact description of the same, reference being` had tothe accompanying drawings, making part of this specifica-tion, in which-Figure l isa vertical central section of a flask containing the patternof a wheel, the shaft, and the mold. Fig. 3 is a plan of the same. Fig.3 is a vertical central section of the flask containing the shaft andthe casting of the wheel, the latter being shown tinted red.

Similar letters of reference indicate corresponding parts in the severalfigures.

rIhis invention consists in providing` the flasks with guides orsockets, of metal or wood, of a proper size to receive the shaft snuglywithin them and properly arranged to hold the shaft in its proper placewithin the mold, independently of the sand, thereby enabling` the moldto be made more expeditiously and the wheel to be cast more truly uponthe shaft.

To enable others to make and use my invention, I will proceed todescribe its con struction and operation.

A is thelower portion of the flask, and B is the upper portion.

C and D are the guides or sockets which constitute my invention, one ineach portion of the flask, connected with the exterior of the flask byarms a a, said guides or sockets being bored truly to receive the shaftand to stand exactly in line with each other when the two parts of theflask are put together and confined to each other by their pins b b andlugs e e.

, I prefer, when practicable, to make the whole flask of cast-iron andto cast the guides or sockets C D and arms a a with their respectiveport-ions of the ask; but when, from the size of the flask, this is notpracticableor l convenient, the guides or sockets may be made of metal,or of wood bushed with metal, and secured properly to the exterior ofthe fiask.

E is the pattern, made without a core, but with a hole of proper size toreceive the shaft F snugly within it. This pattern is molded in the sandin the usual manner, the shaft be,

ing in the iiask and pattern at the time of molding. I prefer generallyto have the pattern attached to a match-plate, cc, as shown in Fig. l;but this match-plate forms no part of my invention, as it is commonlyused in casting wheels and various other articles. Vhen the mold iscomplete, the top portion, B, of the flask and the pattern may beremoved and the top portion of the flask replaced, while the shaftremains in the guide or socket G of the lower portion of the flask; orthe shaft may be lifted out ofthe mold before removing the upper portionof the flask andthe mold, and replaced after the upper portion of theflask has been replaced. rIhe metal is poured into the mold in the usualmanner, and as the shaft is held firmly by the sockets or guides, so asto be incapable of moving in the least degree from its true position,the wheel cannot fail to be cast true, which is not always the case,even with the greatest care, when the shaft is only held in place by thesand.

To insure the wheel being Cast in a proper position longitudinally oftheshaft, I provide a small shoulder on the shaft, as shown at d in Figs. land 2, to rest on the top of the guide or socket C of thelower portionof the ask.

Vhat I claim as my invention, and desire to Asecure by Letters Patent,is-

The employment of guides or sockets C D, of metal or wood, attached tothe flask, to receive and hold the shaft or axle within the sand-moldindependently of the sand, substantially as and for the purpose hereinset forth.

F. NISHVITZ.

lvitnesses:

W. TUscu, .Litres F. BUoKLnY,

